Calculates "Impact Factor" for journals using citation data from over 5000 journals in the sciences and 1500 journals in the social sciences. Compare Impact Factors by subject category, publisher, or country.

h-Index and Author Measures

The h-index is an attempt to quantify the research output of people. The h-index is the number of an author's papers n that each have at least n citations.

**NOTE: Each of the tools listed below calculates the h-index based solely on citations contained in that database. If the database doesn't include the journal(s) your paper(s) is in, your h-index information may be inaccurate. Use tools wisely and with hefty skepticism.

Search for an author, then click Create Citation Report in the upper right corner of the search results. Use the Author Finder tool to get a more refined search for a particular person. Web of Science only considers citations contained in Web of Science when calculating h-index.

Click the small arrow in the search box to run an advanced search by author. If the search returns a matching author profile, that will give you the most accurate results. Otherwise, you can click the gear icon and select Metrics to see an analysis of the entire results set, which will likely contain extraneous entries. Google Scholar calculates h-index using citations contained in Google Scholar.